private int MapNote(clsChordEvTimed nextplaychord, eDir dir, int i)
{
int mindiffpos = 99, mindiffposj = -1;
int mindiffneg = 99, mindiffnegj = -1;
int diff = -999;
int j;
//* calculate min interval (diff) up and down (pos/neg) for each note of next chord
for (j = 0; j < nextplaychord.Chord.Length; j++) //for each note in next 3,4 note chord
{
diff = GetDiff(Chord[i], nextplaychord.Chord[j]); //positive if 2nd param highest
if (diff == 0) //ignore dir - always choose if same note
//nextnote[Chord[i]] = nextplaychord.Chord[j];
{
break;
}
else if (diff > 0 && mindiffpos > diff) //next is up
{
mindiffpos = diff;
mindiffposj = j;
}
else if (diff < 0 && mindiffneg > -diff) //next is down
{
mindiffneg = -diff;
mindiffnegj = j;
}
}
//* determine up true/false based on mindiffneg/pos and required direction (Dir)
bool up = true; //true if mindiffpos is to be used (else mindiffneg)
if (diff != 0)
{
switch (dir)
{
case eDir.Null: //choose min interval
up = (mindiffneg >= mindiffpos);
break;
case eDir.UpSoft: //use smallest interval - up if equal
up = (mindiffneg >= mindiffpos);
break;
case eDir.DownSoft: //use smallest interval - down if equal
up = (mindiffneg > mindiffpos);
break;
case eDir.UpHard: //always go up (if not same note)
up = true;
break;
case eDir.DownHard: //always go down (if not same note)
up = false;
break;
default:
LogicError.Throw(eLogicError.X029);
up = true;
break;
}
}
//* calculate mindiffj
int mindiffj;
if (diff == 0)
{
mindiffj = j;
}
else if (mindiffposj == -1)
{
mindiffj = mindiffnegj;
}
else if (mindiffnegj == -1)
{
mindiffj = mindiffposj;
}
else if (up)
{
mindiffj = mindiffposj;
}
else
{
mindiffj = mindiffnegj;
}
return(nextplaychord.Chord[mindiffj]);
}
/*
* private void ShowText(string text) {
* P.F.frmShowChords.lblTest.Text = text;
* P.F.frmShowChords.lblTest.Refresh();
* }
*/
/* private static int MapNext_TextCount = 0; //for testing */
internal void MapNext(clsChordEvTimed nextplaychord, int pitch, int kb, int callcount)
{
//* create kbmap from this ((previous) playchord)
//* select nearest notes
//* pitch and key used by GetDir to calculate mapping for hypothetical chord (size = chordsize)
if (nextplaychord.Status == eStatus.Play)
{
return;
}
/* bool initial = false; //temp (testing) */
if (pitch < 0 || kb < 0) //initial (called from paint event)
{
if (nextplaychord.Status != eStatus.Initial)
{
return; //initial - already done
}
pitch = PitchMid;
kb = KBMid;
/* initial = true; //temp testing */
}
eDir dir = GetDir(pitch, kb);
#if Debug
string text = "";
if (dir == eDir.Null)
{
text = "Null";
}
else if (dir == eDir.DownSoft)
{
text = "down";
}
else if (dir == eDir.UpSoft)
{
text = "up";
}
else if (dir == eDir.DownHard)
{
text = "DOWN";
}
else if (dir == eDir.UpHard)
{
text = "UP";
}
if (!initial)
{
P.F.frmShowChords.BeginInvoke(dShowText, text + ++MapNext_TextCount);
}
#endif
nextplaychord.InitKBMap();
int[] nextnote = new int[12]; //nextnote[thischordnote%12] = nextchordnote%12
for (int i = 0; i < 12; i++)
{
nextnote[i] = -99;
}
for (int i = 0; i < Chord.Length; i++) //for each note in this 3,4 note chord
{
nextnote[Chord[i]] = MapNote(nextplaychord, dir, i);
}
//* calculate KBMap from nextnote[]
for (int k = KBLo; k <= KBHi; k++)
{
nextplaychord.KBMap[k] = SetKBMap(nextnote, k);
}
nextplaychord.Status = eStatus.Preplay;
}
